The Effects of cannabis on pulmonary structure, function and symptoms / Thorax Online, 31 July 2007
http://thorax.bmj.com/cgi/content/abstract/thx.2006.077081v1
Sarah Aldington et al
"A single cannabis joint has the same effect on the lungs as smoking up to five cigarettes in one go, indicates research published ahead of print in the journal Thorax."
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